photo sharing and upload picture albums photo forums search pictures popular photos photography help login
William Shaheen | all galleries >> Astronomy - Astronomical objects, images and astronomy related projects >> Astro Images by Subject > M57 - The Ring Nebula 16-Mar-2016
previous | next
16-MAR-2016

M57 - The Ring Nebula 16-Mar-2016

Distance: ~2300ly in Lyra

Telescope configuration: Celestron EdgeHD 1100 with the Celestron 0.7x focal reducer (fl=1960mm, f/7.0).
Camera: SBIG STF8300M. Exposures: 3 @ 10 min., CCD temp -10c. Ambient temp 12c. Seeing: 2.7 - 2.90 arc-seconds FWHM. SQM (Sky Quality Reading) 21.08.
Image capture scale: 0.56 arc-sec/pixel (un-binned). Field of view (horizontal) = 31.7 arc-min. Image capture using Software Bisque TSX Pro Camera Add On.
Mount: Orion HDX110 German equatorial mount, unguided, not dithered.
Post processing: ImagesPlus 6.5: FITS conversion and calibration, alignment, stacking/combining using 0 dark frames, 7 bias frames and 5 flat frames, Min/Max Exluded Average combined. Stretched, DDP and Curves in Nebulosity4. Noise reduction in ImagesPlus. Contrast enhancement and cropped to final dimensions in Thumbsplus10.

20160316_M57_CombExcAvg-NEBddpcrv-IPnrarl-TPadj.jpg

0.00s full exif

other sizes: small medium large original auto
share